#VU7688 Out-of-bounds write in Tcpdump - CVE-2015-2153

Vulnerability identifier: #VU7688

Vulnerability risk: High

CVSSv4.0: 8.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber]

CVE-ID: CVE-2015-2153

CWE-ID: CWE-787

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Tcpdump
Server applications / DLP, anti-spam, sniffers

Vendor: Tcpdump.org

Description
The vulnerability allows a remote attacker to cause DoS condition or execute arbitrary code.

The weakness exists due to an error in the rpki_rtr_pdu_print function in print-rpki-rtr.c in the TCP printer. A remote attacker can supply a specially crafted header length in an RPKI-RTR Protocol Data Unit (PDU), trigger out-of-bounds read or write and cause the system crash or execute arbitrary code.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation
Update to version 4.7.2 or later.

Vulnerable software versions

Tcpdump: 4.1.1 - 4.7.0

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External links
https://www.securitytracker.com/id/1039027

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.